Get Block Hash

The getblockhash RPC returns the header hash of a block at the given height in the local best block chain.

Parameter—a block height

Name Type Presence Description
Block Height number (int) Required
(exactly 1)
The height of the block whose header hash should be returned. The height of the hardcoded genesis block is 0

Result—the block header hash

Name Type Presence Description
result string (hex)/null Required
(exactly 1)
The hash of the block at the requested height, encoded as hex in RPC byte order, or JSON null if an error occurred


pai-cli -testnet getblockhash 240886



See also

  • GetBlock: gets a block with a particular header hash from the local block database either as a JSON object or as a serialized block.
  • GetBestBlockHash: returns the header hash of the most recent block on the best block chain.